[PATCH i-g-t v9 6/6] tests/kms_flip: test suspend at most twice on SNB && BMG

["Michał Grzelak" <michal.grzelak@intel.com>]

gettime_us() on SNB and BMG from CI does not return proper time after
starting suspend tests. This results in too many suspends issued before
we hit the duration_ms. Break the loop on second execution.

This WA explicitly conflicts with commit c75dcbdac51d ("tests/kms_flip:
various improvements"). This WA is therefore only used by SNB and BMG.

Signed-off-by: Michał Grzelak <michal.grzelak@intel.com>
---
 tests/kms_flip.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tests/kms_flip.c b/tests/kms_flip.c
index 1a0517bcef..81fa8dd5c0 100755
--- a/tests/kms_flip.c
+++ b/tests/kms_flip.c
@@ -1325,7 +1325,13 @@ static bool event_loop(struct test_output *o, unsigned duration_ms,
 		       unsigned *elapsed)
 {
 	unsigned long start, end;
+	uint32_t devid;
 	int count = 0;
+	bool wa;
+
+	devid = intel_get_drm_devid(drm_fd);
+
+	wa = IS_SANDYBRIDGE(devid) || IS_BATTLEMAGE(devid);
 
 	start = gettime_us();
 
@@ -1346,6 +1352,9 @@ static bool event_loop(struct test_output *o, unsigned duration_ms,
 		if (count && (gettime_us() - start) / 1000 >= duration_ms)
 			break;
 
+		if (count && wa && o->flags & TEST_SUSPEND)
+			break;
+
 		count++;
 	}
 
-- 
2.45.2